The money is the biggest thing here, If you have a normal plastic jerry jug around notice how the outside turns black with mildew or mold in a short time, well that is the alcohol going through the plastic degrading back into a sugar and being used by the plants growing on your tank, also check around your gas filler pipe on your car, it's all black covered in plants, almost no plastic or rubber will contain this fuel , the coast guard even has a spec for how many grams of fuel can leak through a specified amount of rubber hose. I work on a fuel dock for boats and where the rubber hose lays on the wooden deck is all black for around 12 inches either side of the hose, where the diesel hose lays there is only clean wood, so the fumes that leak through the hose are feeding the black plants growing in the grain of the wood, but only on the gasoline side of the deck, very visible and only bleach will remove it. so what this stuff does to your fuel pump etc as it sits in your car is an issue for most .
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